/**
 * Process PayPal Purchase
 *
 * @since 1.0
 * @global $edd_options Array of all the EDD Options
 * @param array $purchase_data Purchase Data
 * @return void
 */
function edd_process_paypal_purchase($purchase_data)
{
    global $edd_options;
    // Check there is a gateway name
    if (!isset($purchase_data['post_data']['edd-gateway'])) {
        return;
    }
    /*
    Purchase data comes in like this:
    
    $purchase_data = array(
        'downloads'     => array of download IDs,
        'tax' 			=> taxed amount on shopping cart
        'subtotal'		=> total price before tax
        'price'         => total price of cart contents after taxes,
        'purchase_key'  =>  // Random key
        'user_email'    => $user_email,
        'date'          => date( 'Y-m-d H:i:s' ),
        'user_id'       => $user_id,
        'post_data'     => $_POST,
        'user_info'     => array of user's information and used discount code
        'cart_details'  => array of cart details,
     );
    */
    // Collect payment data
    $payment_data = array('price' => $purchase_data['price'], 'date' => $purchase_data['date'], 'user_email' => $purchase_data['user_email'], 'purchase_key' => $purchase_data['purchase_key'], 'currency' => edd_get_currency(), 'downloads' => $purchase_data['downloads'], 'user_info' => $purchase_data['user_info'], 'cart_details' => $purchase_data['cart_details'], 'status' => 'pending');
    // Record the pending payment
    $payment = edd_insert_payment($payment_data);
    // Check payment
    if (!$payment) {
        // Record the error
        edd_record_gateway_error(__('Payment Error', 'edd'), sprintf(__('Payment creation failed before sending buyer to PayPal. Payment data: %s', 'edd'), json_encode($payment_data)), $payment);
        // Problems? send back
        edd_send_back_to_checkout('?payment-mode=' . $purchase_data['post_data']['edd-gateway']);
    } else {
        // Only send to PayPal if the pending payment is created successfully
        $listener_url = trailingslashit(home_url()) . '?edd-listener=IPN';
        // Get the success url
        $return_url = add_query_arg('payment-confirmation', 'paypal', get_permalink($edd_options['success_page']));
        // Get the complete cart cart_summary
        $summary = edd_get_purchase_summary($purchase_data, false);
        // Get the PayPal redirect uri
        $paypal_redirect = trailingslashit(edd_get_paypal_redirect()) . '?';
        // Setup PayPal arguments
        $paypal_args = array('cmd' => '_xclick', 'amount' => round($purchase_data['price'] - $purchase_data['tax'], 2), 'business' => $edd_options['paypal_email'], 'item_name' => stripslashes_deep(html_entity_decode(wp_strip_all_tags($summary), ENT_COMPAT, 'UTF-8')), 'email' => $purchase_data['user_email'], 'no_shipping' => '1', 'shipping' => '0', 'no_note' => '1', 'currency_code' => edd_get_currency(), 'item_number' => $purchase_data['purchase_key'], 'charset' => get_bloginfo('charset'), 'custom' => $payment, 'rm' => '2', 'return' => $return_url, 'cancel_return' => edd_get_failed_transaction_uri(), 'notify_url' => $listener_url, 'page_style' => edd_get_paypal_page_style());
        if (edd_use_taxes()) {
            $paypal_args['tax'] = $purchase_data['tax'];
        }
        $paypal_args = apply_filters('edd_paypal_redirect_args', $paypal_args, $purchase_data);
        // Build query
        $paypal_redirect .= http_build_query($paypal_args);
        // Get rid of cart contents
        edd_empty_cart();
        // Redirect to PayPal
        wp_redirect($paypal_redirect);
        exit;
    }
}
/**
 * Process PayPal Purchase
 *
 * @since 1.0
 * @param array   $purchase_data Purchase Data
 * @return void
 */
function edd_process_paypal_purchase($purchase_data)
{
    if (!wp_verify_nonce($purchase_data['gateway_nonce'], 'edd-gateway')) {
        wp_die(__('Nonce verification has failed', 'edd'), __('Error', 'edd'), array('response' => 403));
    }
    // Collect payment data
    $payment_data = array('price' => $purchase_data['price'], 'date' => $purchase_data['date'], 'user_email' => $purchase_data['user_email'], 'purchase_key' => $purchase_data['purchase_key'], 'currency' => edd_get_currency(), 'downloads' => $purchase_data['downloads'], 'user_info' => $purchase_data['user_info'], 'cart_details' => $purchase_data['cart_details'], 'gateway' => 'paypal', 'status' => !empty($purchase_data['buy_now']) ? 'private' : 'pending');
    // Record the pending payment
    $payment = edd_insert_payment($payment_data);
    // Check payment
    if (!$payment) {
        // Record the error
        edd_record_gateway_error(__('Payment Error', 'edd'), sprintf(__('Payment creation failed before sending buyer to PayPal. Payment data: %s', 'edd'), json_encode($payment_data)), $payment);
        // Problems? send back
        edd_send_back_to_checkout('?payment-mode=' . $purchase_data['post_data']['edd-gateway']);
    } else {
        // Only send to PayPal if the pending payment is created successfully
        $listener_url = add_query_arg('edd-listener', 'IPN', home_url('index.php'));
        // Get the success url
        $return_url = add_query_arg(array('payment-confirmation' => 'paypal', 'payment-id' => $payment), get_permalink(edd_get_option('success_page', false)));
        // Get the PayPal redirect uri
        $paypal_redirect = trailingslashit(edd_get_paypal_redirect()) . '?';
        // Setup PayPal arguments
        $paypal_args = array('business' => edd_get_option('paypal_email', false), 'email' => $purchase_data['user_email'], 'first_name' => $purchase_data['user_info']['first_name'], 'last_name' => $purchase_data['user_info']['last_name'], 'invoice' => $purchase_data['purchase_key'], 'no_shipping' => '1', 'shipping' => '0', 'no_note' => '1', 'currency_code' => edd_get_currency(), 'charset' => get_bloginfo('charset'), 'custom' => $payment, 'rm' => '2', 'return' => $return_url, 'cancel_return' => edd_get_failed_transaction_uri('?payment-id=' . $payment), 'notify_url' => $listener_url, 'page_style' => edd_get_paypal_page_style(), 'cbt' => get_bloginfo('name'), 'bn' => 'EasyDigitalDownloads_SP');
        if (!empty($purchase_data['user_info']['address'])) {
            $paypal_args['address1'] = $purchase_data['user_info']['address']['line1'];
            $paypal_args['address2'] = $purchase_data['user_info']['address']['line2'];
            $paypal_args['city'] = $purchase_data['user_info']['address']['city'];
            $paypal_args['country'] = $purchase_data['user_info']['address']['country'];
        }
        $paypal_extra_args = array('cmd' => '_cart', 'upload' => '1');
        $paypal_args = array_merge($paypal_extra_args, $paypal_args);
        // Add cart items
        $i = 1;
        foreach ($purchase_data['cart_details'] as $item) {
            $item_amount = round($item['subtotal'] / $item['quantity'] - $item['discount'] / $item['quantity'], 2);
            if ($item_amount <= 0) {
                $item_amount = 0;
            }
            $paypal_args['item_name_' . $i] = stripslashes_deep(html_entity_decode(edd_get_cart_item_name($item), ENT_COMPAT, 'UTF-8'));
            $paypal_args['quantity_' . $i] = $item['quantity'];
            $paypal_args['amount_' . $i] = $item_amount;
            if (edd_use_skus()) {
                $paypal_args['item_number_' . $i] = edd_get_download_sku($item['id']);
            }
            $i++;
        }
        // Calculate discount
        $discounted_amount = 0.0;
        if (!empty($purchase_data['fees'])) {
            $i = empty($i) ? 1 : $i;
            foreach ($purchase_data['fees'] as $fee) {
                if (floatval($fee['amount']) > '0') {
                    // this is a positive fee
                    $paypal_args['item_name_' . $i] = stripslashes_deep(html_entity_decode(wp_strip_all_tags($fee['label']), ENT_COMPAT, 'UTF-8'));
                    $paypal_args['quantity_' . $i] = '1';
                    $paypal_args['amount_' . $i] = edd_sanitize_amount($fee['amount']);
                    $i++;
                } else {
                    // This is a negative fee (discount)
                    $discounted_amount += abs($fee['amount']);
                }
            }
        }
        if ($discounted_amount > '0') {
            $paypal_args['discount_amount_cart'] = edd_sanitize_amount($discounted_amount);
        }
        // Add taxes to the cart
        if (edd_use_taxes()) {
            $paypal_args['tax_cart'] = edd_sanitize_amount($purchase_data['tax']);
        }
        $paypal_args = apply_filters('edd_paypal_redirect_args', $paypal_args, $purchase_data);
        // Build query
        $paypal_redirect .= http_build_query($paypal_args);
        // Fix for some sites that encode the entities
        $paypal_redirect = str_replace('&amp;', '&', $paypal_redirect);
        // Get rid of cart contents
        edd_empty_cart();
        // Redirect to PayPal
        wp_redirect($paypal_redirect);
        exit;
    }
}